Wireless frequency modulation broadcast signal digit relay IP core and transceiver

A technology of FM broadcasting and digital relay, which is applied in wireless communication, broadcasting receiving circuit, radio transmission system, etc. It can solve the problems of high-speed digital signal processing and high-speed scrambling code, and overcome multipath fading , design convenience, improve integration and reliability

Inactive Publication Date: 2015-12-30
DONGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional serial scrambling technology cannot generate high-speed scrambling ...

Method used

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  • Wireless frequency modulation broadcast signal digit relay IP core and transceiver
  • Wireless frequency modulation broadcast signal digit relay IP core and transceiver
  • Wireless frequency modulation broadcast signal digit relay IP core and transceiver

Examples

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Embodiment Construction

[0036] In order to make the present invention more comprehensible, it will be described in detail below in conjunction with specific embodiments and accompanying drawings. It should be understood that these examples are only illustrative of the invention.

[0037] Such as figure 1 As shown, the radio frequency transmission system is composed of two radio frequency transceivers, which are transceiver 1 and transceiver 2 respectively. In the transceiver 1, the receiving end receives the 87-108MHz FM broadcast signal, and converts the radio frequency signal to zero intermediate frequency 0-21MHz through digital down-conversion. The power equalization and scrambling code processing are performed on the two-way signals, and the IP core b completes the descrambling code and time-delay equalization processing on the IQ two-way signals.

[0038] Such as figure 2 As shown, the system on chip is divided into two parts, the microprocessor and the FPGA. The microprocessor is always st...

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PUM

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Abstract

The invention relates to an IP core of a wireless frequency modulation broadcast signal digit relay. The IP core is characterized in that a wireless transmission system is composed of two wireless radio frequency transceivers composed of agile radio frequency chips, the first transceiver receives broadcast signals, then a first IP core carries out multipath power equalization and encryption on the broadcast signals, and then a frequency spectrum is moved to an idle frequency range; the second transceiver moves the frequency spectrum back to the original frequency spectrum, and processed signals can be distinguished from receiving signals through movement of the frequency spectrum two times; and a second IP core in the second transceiver realizes decryption and time delay equalization on the signals, and the wireless broadcast signals are better processed and transmitted. According to the invention, the advantages are as follows: the complexity of a hardware circuit design is greatly simplified, the cost is decreased, the construction period is shortened, the problems of restrictions of wired relay transmission in wiring, high fiber transmission construction cost, long period and the like are overcome, and user correction and repeated application of the IP cores to a certain degree enable application by users to be more convenient.

Description

technical field [0001] The invention relates to an IP core of a wireless FM broadcast signal digital relay and a transceiver adopting the IP core, belonging to the technical field of wireless communication. Background technique [0002] With the rapid development of wireless communication and chip technology, and the increasing expansion of underground rail transit, underground tunnels will attenuate and isolate broadcast signals, making underground personnel, such as subway passengers, unable to receive radio FM broadcast signals. Therefore, it is particularly important to realize underground coverage of broadcast signals. [0003] In order to overcome the influence of various external factors on the input signal of the transceiver, it is necessary to use automatic gain control (AGC) technology. With the continuous improvement of the performance of the transceiver, the requirements for the AGC system are also getting higher and higher. However, the transceiver can only so...

Claims

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Application Information

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IPC IPC(8): H04B7/155H04B7/005
CPCH04B7/005H04B7/15507H04H40/18H04W16/26
Inventor 倪林严杰林定祥范红唐俊曹爱玲刘方亮
Owner DONGHUA UNIV
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